What is Terahertz：The terahertz stone is made of a variety of natural energy ores，terahertz is known as one of the top ten science and technology in the 21st century. The reason is because it can release terahertz waves, which are also called "life rays" and are a kind of "light" energy. Terahertz is the smallest particle of energy. It is even smaller than nanometers. It is called the third largest medicine. It can enter cells more easily, resonate with the energy waves of the cell magnetic field, repair damaged cells, and replenish cell energy , Improve vitality! Terahertz energy guasha stone has excellent thermal conductivity and specific heat characteristics. Only a small amount of energy is needed to immediately raise and lower the temperature. Just put the gua sha massager into hot or cold water for 5 seconds, you can easily experience the beauty effect of hot compress/cold compress. Hyperthermia: relax the skin, promote blood circulation, and promote the introduction of massage essence. Cooling therapy: calming, firming, lifting, soothing